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I am a new forum member as I just bought my Cayman on Monday. I am totally loving the driving experience as the handling is just amazing. I do have one problem however. When ever I go over a tar strip on the higway on any other heavy bump, the rear hatch bangs and even the glass rattles. I believe there have been some earlier discussions regarding new buffers from the factory for the hatch. Does anyone know the details and are their any recommended 'self' fixes to try. This is driving me crazy and taking away from the overall enjoyment with this great car. Thank you.
There is one self help fix in the Articles section (Misc category) and lots of posts on hatch thunk, and the one you already found on the hatch spacer replacement that your dealer can do. You should have your dealer look at it.
My car was at the dealership yesterday to fix the "clunk". They didn't. It might even be worse now. Maybe not. Their solution was to screw in the "stoppers" (not sure what they are called) thus making them shorter and the fit tighter.
The article on fixing the clunk is great but I'm not sure that I could pull that off. I'll probably just live with it for now.
Years ago I had a 924. It had the same clunk. I guess nothing has changed.
I wouldn't doubt th it is worse now with shorter stoppers. Making them shrter allows the hatch to move more... enouraging the clunk with smaller bumps.
My car was at the dealership yesterday to fix the "clunk". They didn't. It might even be worse now. Maybe not. Their solution was to screw in the "stoppers" (not sure what they are called) thus making them shorter and the fit tighter.
The article on fixing the clunk is great but I'm not sure that I could pull that off. I'll probably just live with it for now.
Years ago I had a 924. It had the same clunk. I guess nothing has changed.
From what I understand, you want to screw the stoppers (the ones with the springs around the thread at the back corners of the hatch) as far out as you can, this makes the hatch tighter (as described above). My dealer set them that way when the car was delivered, and along with the PASM, my car doesn't have the clunk.
brad
PASM - Porsche Active Suspension Management
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM
__________________
21-year PCA Member
PCA DE Instructor
From what I understand, you want to screw the stoppers (the ones with the springs around the thread at the back corners of the hatch) as far out as you can, this makes the hatch tighter (as described above). My dealer set them that way when the car was delivered, and along with the PASM, my car doesn't have the clunk.
brad
You and GeoMedic are both right. I got it backwards. I'm pretty sure they moved them out. (At my age I get a lot of things backwards. ) I wonder if I should screw them out just a little more.
PASM - Porsche Active Suspension Management
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM
I would recommend doing the "fix" per the articles section. Takes less than an hour, and relieves much of the cabin-resounding "clunk"
Also, make sure your rear tires are inflated to proper pressures; mine came from the dealer a bit overinflated; running them at recommended stock cold pressure will alleviate some rear harshness if your tires are above recommended pressure.
You and GeoMedic are both right. I got it backwards. I'm pretty sure they moved them out. (At my age I get a lot of things backwards. ) I wonder if I should screw them out just a little more.
My dealer told me (I wasn't there for delivery, they had to ship the car to me in LV - long story) they ran them out to the point where another 3/4 turn, and they'd come out out of the threaded sockets... the spring keeps them tight, so they won't back out of the hole any further than they're set, but they said 3/4 a turn was the "safe" way to keep it.
brad
__________________
21-year PCA Member
PCA DE Instructor
I am very pleased to report that my car hasn't made a single clunk and I have driven over some very rough pavement (cobble stones, sharp edges, etc...).
I have PASM, but once, while on cobble stones, I activated the Sport mode, just to see how bad it would get, and still no clunk.
PASM - Porsche Active Suspension Management
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM
It might even be worse now. Maybe not. Their solution was to screw in the "stoppers" (not sure what they are called) thus making them shorter and the fit tighter. 
) I wonder if I should screw them out just a little more. 
